HP Array Controller HSG V8.7 Software - Manual (Page 534)

G–8 HSG80 User’s Guide
FRU Field replaceable unit. A hardware component that can be replaced at
the customer’s location by DIGITAL service personnel or qualified
customer service personnel.
full duplex (n) A communications system in which there is a capability for 2-way
transmission and acceptance between two sites at the same time.
full duplex (adj) Pertaining to a communications method in which data can be
transmitted and received at the same time.
FWD SCSI A fast, wide, differential SCSI bus with a maximum 16-bit data transfer
rate of 20 MB/s. See also SCSI and FD SCSI.
GLM Gigabit link module
giga A prefix indicating a billion (10
9
) units, as in gigabaud or gigabyte.
gigabaud An encoded bit transmission rate of one billion (10
9
) bits per second.
gigabyte A value normally associated with a disk drives storage capacity,
meaning a billion (10
9
) bytes. The decimal value 1024 is usually used
for one thousand.
half-duplex (adj) Pertaining to a communications system in which data can be either
transmitted or received but only in one direction at one time.
hard address The AL_PA which an NL_Port attempts to acquire during loop
initialization.
HIPPI–FC Fibre Channel over HIPPI
host The primary or controlling computer to which a storage subsystem is
attached.
host adapter A device that connects a host system to a SCSI bus. The host adapter
usually performs the lowest layers of the SCSI protocol. This function
may be logically and physically integrated into the host system.
host compatibility mode A setting used by the controller to provide optimal controller
performance with specific operating systems. This improves the
controller’s performance and compatibility with the specified operating
system. The supported modes are A, Normal (including DIGITAL